Academics
LatticeForge
A number-logic puzzle guild for ages 9–14 — Sudoku, KenKen, Kakuro, Nonogram, Futoshiki, Hitori, Skyscrapers, Slitherlink, and Star Battle — where every grid hides one rule and you find it by deduction, never by guessing.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, praises, and patiently scaffolds learning. On-device AI personalizes the mentor's responses to your kid's progress — never connecting to a server, never collecting data.
Mentored by Ada
#5E60CE Distributed-narrative cast
Meet the cast
The LatticeForge cast are the artisans of a number-logic puzzle guild, and each one is the living rule of a different grid — Onlie sets her lantern on the only place a number fits (Sudoku), Cage fences numbers to hit a target (KenKen), Kaku's runs sum to their clue (Kakuro), and Pica, Chevron, Umbra, Serra, Lasso, and Vega each carry another puzzle's constraint. Ada keeps the guild and teaches the one habit behind them all: find the square that's forced, and never guess. Find the rule, and the cells fall into place.
Onlie
Sudoku — Latin-square uniqueness: sets her lantern on the only place a number can go in its row, column, and box
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Cage
KenKen — arithmetic-cage: fills a fenced region so its numbers hit the plaque's target under its operation
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Kaku
Kakuro — cross-sum: fills a run so it sums to its clue with no digit repeated; the total names its parts
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Pica
Nonogram/Picross — run-length deduction: reads the edge numbers and fills the overlap that must be filled
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Chevron
Futoshiki — inequality/ordering: obeys the < / > flags between neighbours to force the numbers into order
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Umbra
Hitori — elimination + connectivity: shades out duplicates so none touch and the rest stays whole
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Serra
Skyscrapers — visibility count: places towers so each edge clue counts how many can be seen, taller hiding shorter
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Lasso
Slitherlink — single-loop edge deduction: draws one closed loop so each number uses exactly that many edges
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Vega
Star Battle — partition + non-adjacency: places the stars so each row, column, and region holds its quota and none touch
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Ada
Mentor host — keeps the puzzle guild; teaches 'every grid hides one rule — find the forced cell, never guess'
Read chapter →
Browse all 10 chapters → · What's distributed-narrative methodology? →
What's inside
Learning goal
A number-logic puzzle guild for ages 9–14 — Sudoku, KenKen, Kakuro, Nonogram, Futoshiki, Hitori, Skyscrapers, Slitherlink, and Star Battle — where every grid hides one rule and you find it by deduction, never by guessing.
Question kits
16 curriculum-aligned kits × 25 questions = 400 questions per app, mapped to recognized standards.
On-device AI mentor
FoundationModels-powered hints, feedback, and adaptive difficulty — all running locally.
Mentored by Ada — on-device AI, no data leaves the device.
How LatticeForge handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ No ads, no in-app purchases — you pay once
- ✅ COPPA compliant under the 2026 FTC amendments
- ✅ Parental controls + session limits + content filters built in
LatticeForge runs on ForgeKit — the open-source Swift Package Manager framework that powers every Spark & Anvil app. ForgeKit ensures consistent accessibility, COPPA compliance, and design language across the portfolio, so your kid's progress and preferences feel coherent across every app they touch.
Coming to the App Store
LatticeForge is in active development. Email us to hear when it ships — no marketing, no spam, just a one-shot launch announcement.
Email me at launch
